/*****************************************************************************
 *   Copyright 2005 Tim A Wang
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 ****************************************************************************/
package com.jb.web.renderer;

import com.jb.web.bean.Region;
import com.jb.web.bean.UIComponentImpl;
import com.jb.web.context.WebContext;

import java.util.Iterator;

import com.jb.faces.component.UIComponent;
import com.jb.web.bean.Panel;

public class FlowLayoutManager extends TextRenderer {

    public StringBuffer renderBegin(WebContext pCtx, 
                                    UIComponent itemToRender) {
        StringBuffer html = new StringBuffer();
        Panel sect = (Panel)itemToRender;

        String string = sect.getStyle(pCtx);

        if (!isEmptyString(sect.getOverFlow())) {
            string = string + "overflow:" + sect.getOverFlow() + ";";
        }

        html.append("<div ").append(getEditScript(pCtx, sect)).append(addTagProperty("stretch", sect.getStretch(), null));

        if (sect.isDroppable())
        {
            html.append(addTagProperty("droppable", "true", null))
            .append(addTagProperty("onDroppedOn", sect.getOnDroppedOn(),null))
            .append(addTagProperty("onDraggedOn", sect.getOnDraggedOn(),null))
            .append(addTagProperty("onDraggedOut", sect.getOnDraggedOut(),null))
            .append(addTagProperty("onJBDrag", sect.getOnDragging(),null))
                    ;
        }

        html.append(addTagProperty("class", sect.getStyleClass(), null)).append(addTagProperty("style", string, null)).append(">");

        return html;
    }


    public StringBuffer renderChildren(WebContext pCtx, 
                                       UIComponent itemToRender) {
        Region sect = (Region)itemToRender;
        StringBuffer html = new StringBuffer("");
        Iterator iter = sect.getChildrenSorted(null).iterator();

        if (!iter.hasNext()) {
            Object value = evaluate(pCtx, sect, sect.getValue());

            if (!isEmptyString(value)) {
                html.append(value);
            }
        } else {

            while (iter.hasNext()) {
                UIComponentImpl aSect = (UIComponentImpl)iter.next();
                html.append(aSect.render(pCtx)).append(" ");
            }
        }
        return html;
    }


    public StringBuffer renderEnd(WebContext pCtx, UIComponent itemToRender) {
        return new StringBuffer("</div>");
    }
}
